Kestrel on new websites

1. Kestrel appeared on about 1,000 new sites in the last 30 days.^[1]
2. It is unusually common on .net domains: 4.2% of the domains running it, against 2% of domains across new sites.

The line is the 7-day average share of new sites that use Kestrel, since 10 September.

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	nginx	9.6%	37.4%
2	–	LiteSpeed Web Server	6.6%	25.9%
3	–	Apache	4.7%	18.3%
4	–	Caddy	3.0%	11.7%
5	–	OpenResty	0.9%	3.5%
…
12	▲1	Kestrel	<0.1%	0.2%

All-time shares across the new sites we track: of all of them, and of the sites using any Server tool. All 143 in Server

Tool	Sites with both	vs all new sites	Bar
Azure Application Insights	519	650x
Blazor	525	426x
Azure App Service	470	337x
Caddy	596	7.6x
Bootstrap	467	4.2x

Tools that turn up far more often on Kestrel sites than on new sites in general, and how many times as common each one is there.

756 of the 2,624 sites using Kestrel are product launches we list individually. The other 1,868 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site	Found	Also detected
Socials Copilot: sociální sítě pro značky s vlastním hlasem socialscopilot.com	Oct 20
Boardcastle — Party games that gather people boardcastle.com · Games	Oct 19
Sophium Odélia — recepcionista inteligente para consultórios odontológicos odelia.com.br · Brazil	Oct 19
ÔnChắc – Bộ đề trắc nghiệm có lời giải cho sinh viên onchac.com	Oct 19
SDS Components — 100+ production-ready Blazor components sdscomponents.com · Developer Tools	Oct 19
UK Sanctions Screening for Insurers and Brokers · Policy365 screening.policy365.cloud · Finance · Canada	Oct 18
openhow — The story behind the work openhow.me	Oct 18
Immobiliensoftware für Makler ses-realestate.com · Germany	Oct 18
Dijital Davetiye · Zarfaç zarfac.app · Türkiye	Oct 18
CardForYou – one card, everyone's message cardforyou.ch · Switzerland	Oct 18
What Danish shops are starting to sell seenpeek.com	Oct 18
SDSHotel - Management software for hotels and B&Bs sdshotel.com · Productivity	Oct 18

Showing the most recent 12 of 756.

Watches, exports and the API give you all 2,624 sites using Kestrel, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.
3. Green hosting is the share whose web host The Green Web Foundation lists as running on green energy, among sites checked since 1 April 2026, against the same share for every new site we checked over that time. Data from The Green Web Foundation.